On a sunny August morning in Geneva, as diplomats crowded the corridors of the United Nations for another round of arduous negotiations, something appeared on the square in front of the building that no one could ignore.
A giant figure sat hunched over, chin supported on his hand - in a pose the whole world knows from Rodin's The Thinker. But this is no bronze casting. This Thinker is six metres tall and created from recycled plastic. In one hand he clutches a crushed bottle, in the other he holds a child. At his feet, trapped in a strand of DNA, the figure of Mother Earth wriggles.
